Embroidering machine



6 Sheets-Sheet 1.

O. NIDA. EMBROIDERING MAGHINE.

Patented Oct. 4,1881.

INVENTGR 5%. 41

WITNESSES N, PETERS, Phuln whognphen Washington. 0.;

.\ 4 I I s sheets-sheet a.

* G. NIDA.

v EMBROIDERING MAGHINE.

No. 247,944. ladzentad001;. 4,1881.

WITNESSES: V INVENTORY 6 SIiaetS- -Shetat 4. v 0. NIDA. EMBROIDERING MACHINE. No. 247,944. Patented 0on4, 1881.

WITNESSES INVENTOR 6 Sheets-Sheet 5. G. NIDA. BMBROIDERING MACHINE-T No. 247,944. Patented Oct. 4,1881.

INVENTOR:

WITNESSES a She'ets--Sheet a.

CQNIDA, EMBROIDBRING MAGHINE.

' atented Oct. 4,1881.

No. 247,944. 4 P

UNITED STATES CHARLES NlDA, on new YoeK, n. Y., assrenon TO DAVID srunrnneeena,

on SAME PLACE.

EMBROlDERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 247,944, dated October 4, 1881.

- Application filed September 16, 1879.

To all whom it may concern:

Be it known that I, CHARLES NIDA, of the f 'city, county, and State of New York, have invented certain new and useful improvements in Embroidering-Machines, of which the following is a specification.

and having connected with it apantograph.

The improvements relate, essentially, to means for effecting a more reliable working of the needle-carriage and of the take-up mechanism for the needle-threads, and to im proved tension devices for the needle and shuttle threads, and to an auxiliary cloth-supportingframe for embroidering thin fabrics without inj nring the same. In the accompanying drawings, which fully illustrate my invention, Figure 1 represents a plan View of my improved embroidering-machine, partly in horizontal section on the line to m, Fig. 2. Fig. 2 is afront elevation, show- 7 ing the take-up mechanism. Fig. 3 is a side vertical transverse section of the adjustable cam for regulating the extent of motion of the take-up. Fig. 7 is avertical transverse section of the machine Fig. 8, a vertical transverse section oftheauxiliary cloth-supportingframe; Fig. 9, a detail view of a modified form of adjusting mechanism for the same. Figs. 10 and 11 are, respectively, a top view and a vertical longitudinal section ot'the shuttle with bobbintension; and Fig. 12 is a detail vertical central section of the tubular bobbin-spindle. Fig. 13 is a sectional detail, showing the manner of confining the needles to their reciprocating bar. Fig. let is a side elevation, showing a mode of operating the frame B, carrying the cloth on which the embroidery is made. Fig. 15 is a perspective view, showing the rear flange on the needle-clamp, the needle, and a portion of the needle-bar.

Similar letters of reference indicate correspondin g parts.

A in the drawings represents the supporting-frame of my improved embroidering-machine, from the upper part of which is suspended the verticall y-guided cloth-supportin g frame B, which is counterbalanced by weighted levers B in the well-known manner. The clothsupporting frame B is connected with a panto- 6o graph, (J, the pointer of which is moved along a pattern-card, so as to produce thereby the corresponding motion of the cloth-supporting frame for the. proper length and position'ot' the embroidering-stitches, which are formed by a series of needles, D, and shuttles E, that work in conjunction with each other.

The shuttle carriage or race F/is stationary and secured to the supporting-frame A immediately back of the cloth-supporting frame 13.

The shuttles E are moved by a number of shuttle-drivers, E, which are adjustably secured by slots and set-screws to a slide-rod, e, to which reciprocating motion is imparted by the cam-track of a horizontal cam, 6'. (Shown in top view in Fig. 1.) The cam track or groove of cam e engages a roller, 0 on the extension of the slide-rod e, the extension being guided by a slot in said extension on the shaft of the cam. One portion of the cam-track at 0 the point of greatest eccentricity, is of arcshape and concentric to the shaft, for the purpose of obtaining a full stop for the shuttles at the point when it is desired to stretch the needlethreads for properly laying on the stitches.

cl on rollers d, being retained thereon by its 0 weight. The eccentricity of the cam-track ot' the cams D imparts the proper motion to the needle-carriage, so as to cause the needles to advance, pass through the cloth, and recede at the proper time. The interior portion of 5 each drivingcam D is provided at its point of greatest eccentricity with an adjustable section, at, which is guided in suitable manner and secured by slot and set'screw, so as to be projected forward into the cam-track and force 1 co the needles to a greater or less extent through the fabric. The needle-threads are thereby enabled to form larger loops, and consequently admit of the easier passage of the shuttles.

The guide-rails d of the needle-carriage D are extended upward in the form of standards, which are transversely connected by a horizontal rail, d, to which are applied the clampsockets d for the needles. The shank of each needle is placed into a groove of the rail and a groove of the clamp, the butt of the needle bearing against a rear flange or shoulder, d of the clamp. The clamps d are secured to the ends of levers d, the longer arms of which are acted upon by spiral springs d so that the clamps are tightly pressed on the rail, thus securely retaining the needles. By pressing on the outer ends of the clamp -levers the clamps are raised, and the needles may be inserted or removed with great facility. By this arrangement the needles may be quickly and conveniently inserted or removed for being exchangeda point of considerable advantage, when it is considered that in machines of this class the needles are arranged in gangs of one hundred and more. The needles pass through perforations of the front flange of the shuttlerace, after havin g pierced the fabric, the threads forming on the back of the same the loops for the shuttles in the customary manner.

The take-up mechanism consists of a frame, F, the side standards or arms of which are keyed to apivot-shaft, turning in bearings of the rails d. The bobbinsG are placed on fixed pins on a horizontal board or shelf, G, which is supported on bracket-arms of frame F, the threads passing from the bobbins over intermittently-operated tension devices H back of the bobbins, then over a round guide-rod in 4 front of and above the bobbins, through holes of the needle-clamp supporting-rail to the needles.

' The proper motion is imparted to the takeup by cams f on the driving-shaft and by levers f of sufficient length, the levers being held in contact with the camsf by weights or springs. The opposite ends of the levers f are keyed to an auxiliary shaft, f that is sup ported in bearings of -needle-carriage D "ertically above the lower pivot-shat" t, f of the same.

The upper and lower shafts are pror'ided with parallel crank-arms j, which are keyed to the same and connected by a pivoted link, f which can be set by pins and holes of the crank-arms to greater or less distance from the shaft, so as to produce a greater or less oscillating motion of the take-up frame, as required.

The actuating-camsf impart the oscillating motion to the take-up frame, and are provided with adjustable cam-sections 1,2, 3, and 4, as shown in Fig. 5, said cam-sections being of different length, so as to project to greater or less distance from the cams.

By setting the cam-sections so as to project more or less the motion of the take-up mechanism may be controlled to a nicety.

The action of the cam-sections is as follows:

- Cam-section 1 unwinds the threads sufficiently from the bobbins to admit the forming of the loops for the shuttles, while cam-section 2, being somewhat longer than cam-section 1, draws the loops tightly over the shuttles. Cam-section 3 is of greater length, and serves, inconncction with the receding motion of the needlecarriage, to draw the loops through the fabric after the shuttles have been withdrawn therefrom. Cam-section 4 is the smallest in size, andimparts, when the return motion of the needle-carriage is completed, a slight stretching action on the threads, to take up any-slack therein.

The take-up mechanism is'reciprocatcd with the needle-carriage, and is oscillated as described, to properly form the stitches. As the top guide-rod of the take-up oscillates in the same plane, or nearly so, with the threads, a more reliable action of the take-up is produced than when the stitches are formed by lifting the thread above the planein which they pass through the needles and cloth. Another advantage of the take-up mechanism consists in arranging all the bobbins and tension devices on the take-up frame and oscillating them therewith, which is an entirely new feature.

The tension of the threads is obtained by the intermittently-actuated tension-devices H, which are arranged on a transverse screw-rod, h, at the rear part of the take-up frame F, back of and in line with the bobbins and needles. Each tension H is formed of two disks, h h one of which abuts against a screw-nut, h while the other is guided on a sleeve-shaped extension of the first disk and pressed against the same by a spiral spring, h, interposed between the second disk and a second screw-nut,

7L3, at a suitable distance therefrom.

The degree of pressure of the spring on the tension-disk h is regulated by setting the screwnut nearer to or farther from the second disk.

The spring-acted disks are provided with circumferential flanges 7L which are engaged by a notched rail, h, that is guided in slots of the take-up frame F and intermittently reciprocated by a fulcrumed lever, h", the lower forked part of which is aoted upon by a flanged sleeve, k of the lower pivot-shaft, f of the frame F. The flanged sleeve k is shifted laterally to and fro on the pivot-shaft f by a crank-arm, k which is keyed to a sleeve, h of the shaft f said sleeve being connected by a lever, h, to a cam,h on the driving-shaft, which cam, by its eccentric portion, lifts the lever at the proper moment. The lever it acts by the crank-arm on the shifting sleeve, which again transfers motion to the notched rail h"'. The notched rail 7L6 engages the flanges of all the spring-acted tension-disks h and pushes them away from thefixed disks and from the threads, so that the latter, being released from the pressure of the spring-acted disks, may freely follow the motion of the needles and supply the required length of thread for the loops. As soon as this is accomplished the threads are clamped again by the tensiondisks, so as to follow the motion of the take up mechanism in i'orming'the stitches.

The adjustable tension-devices at the rear part of the take-up frame are within convenient reach for adjustment devices operating on the bobbins, owing to the gradual unwind ing and decreasing size of the bobbins.

Hitherto there was some difficulty in machines of this kind in embroidering thin and yielding fabrics--such as gauze, &G.LS by the tightening of the stitches the fabrics were liable to give and tear. This objection I have obviated by the employment, in combination with the main frame B, of an auxiliary frame, B which is movable toward and from the main frame, and on which the cloth'rollers are applied. I have represented in the annexed drawings two ways of operating the auxiliary frame B In Fig. 8 frame B is arranged to work freely inside of frame B, and is connected to the latterby means of pins 2, which passfreely through the vertical slots 3, made through the side rails of frame 13, and through inclined slots 4, madethrough ear-projections on the side rails of auxiliary frame B The pins 2 are connected to short rods 5, which are con nected to levers 6. By oscillatinglevers 6 the frame 13*, with its cloth-bearingrollers, can be moved toward or from the frame 13. The roller carrying frame B of Figs. 9 and 14 is placed on the back of the frame 13, and connected to it by means of guiderods 7, on which it can slide freely, acted on by springs 8, which hold it in contact with the frame B. At the four corners of the frames, and in recesses formed in them, earns 10 are arranged on verticalrods 11, bearing on their lower ends crank-arms 12,

which are connected by rods 13 13 to a lever, 14, located at the middle of the length of the lower rails of the frames and pivoted to a plate fixed to frame 13. The lever 14 is connected by a gimbal-joint, 15, to a rod, 16, which is free to play vertically and to oscillate in a bearing, T, and which has a crank formed on its lower end that is acted on by an eccentric, Tflkeyetl on the shaft 6 of cam c.

The connection of the frame B to the eccentric T will not interfere with the movements which it is desired to give to the frames by means of the pantograph to produce the figures.

The eccentric T is adjusted onits shaft with reference to the movements given to the needles, shuttles, and take-up mechanism on the reciprocating carriage, and so that the auxiliary frame 13 will be moved forward at the time when the needles pierce the fabric, and at the moment it is necessary to draw the stitches tight in the fabric the said auxiliary frame will receive a slight backward movemeet or a movement from the carriage when the latter arrives at the end of its back-stroke. It will be seen from the above description that the final act of tightening the stitches is produced by the slow backward movement given to the auxiliary frame; hence the carriage may receive a very rapid motion without liability of tearing the fabric during the act of drawing tight the stitches.

The frame B it will be observed, receives movements from the eccentric for the purpose described independently of the frame B. This frame B is, however, free to take part in all the movements given to the frame B by the pantograph to form the figures.

The shuttles are provided with bobbins, having hollow tubular spindles E, as shown in Figs. 10,1l,and .12, said spindles being placed on center pins that are pivoted at one end to the slotted point of the shuttle. The tubular spindle fits by a. conically-ta 'iering point into a tapering socket-hole in the heel portion ofthe shuttle, and receives the proper tension by a spiral spring interposed between a concaved disk or flange at the opposite end of the spindle and the point of the shuttle, as shown in Figs. 10 and 11. The bobbin is removed from the shuttle first by releasing the conical end, then swinging the spindle on its pivot to the outside of the shuttle, the spindle being then wound with thread and replaced. The advantage of the tubular spindle consists in the facility and speed by which a series of them can be rewound on a bobbin-winding machine and then replaced into the shuttles. lreserve the right to make a separate application for a patent on this shuttle construction.

As in embroidering-machines of this class, a large number of needles and shuttles are employed, which form the embroidering-stitches on the stretched fabric, as the fabric'is placed into the proper position for the same by the pantograph, a high degree of accuracy in the motions of the needle-carriage, shuttles, takeup mechanism, &c., is required. This I have aimed to secure by the variable and adjustable cams, which govern the motion of the needle-carriage, shuttles, and take-up, whileI have furthermore aimed to simplify the needleholding devices and the tensions for the needle and shuttle threads, and finally adapted the machine for embroidering even the thinnest fabric without injury to the same.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. In embroidering-machines of the class described, a series of shuttles and sh Little-drivers with ashuttle-actuating rod, having a slotted extension, a horizontal cam the camtrack of which has at its point of greatest eccentricity an arc-shaped portion or point of repose concentric with the shaft of said cam, all combined substantially in the manner and for the purpose described.

2. In an embroidering-machine of the class described, the combination of the reciprocating needle-carriage with actuating-cams, of the driving-shaft, having adjustable cam-sections at the point of greatest eccentricity of the camtracks to force the needles to a greater or less ,for the shuttles,

extent through the fabric to substantially as described.

3. In an embroidering-machine ot' the class described, the combination of the needle-carriage, having a transverse supporting-rail,with lever, spring-acted needle-clamps, and their rear flanges, d substantially as described.

4. In an embroidering-maohine of the class described, the combination ofthe reciprocating needle-carriage with an oscillating take-up mechanism, the frame of which supports the bobbins, and the intermittently-actuating tension devices for the needle-threads, substantially as described.

5. In an embroider-ing-machine of the class described, the combination of the oscillating take-up with intermittently-actuating tension devices formed offixed and spring-acted disks, with a laterally-reciprocatingnotched rail that embraces the springacted tension-disks when the threads have to be released to form theloops substantially as described.

6. In an embroidering-machi'ne of the class described, the combination of the takeup be embroidered,

frame, the crank-levers, the actuating-cams 0t 2 5 the driving-shaft, and the adjustable cam-sections of different sizes to oscillate the take-up at the proper time to form ,the stitches, substantially as described.

7. In an embroidering machine wherein a reciprocatin g carriage is employed, bearing the needles, and take-up mechanism, and a frame, B, which latter receives its movements from a pantograph, the combination, with the frame B, of an auxiliary clothdrame, movable independently of frame B by means of an eccentric, cams, and connecting-rods or theirequivalents adapted to eii'ect the tightening of the stitches, substantially as and for the purpose described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of t\vo'witnesses,this 16th dayofAugust,

CHARLES NIDA. Witnesses:

PAUL GOEPEL, CARL KARP.

It is hereby certified that in Letters Patent No. 247,944, granted October 4, 1881,

upon the application of 01m rles Nida, for an improvement in Embroidering Machines,

the name of the assignee and grantee was emneonsly written and nrinted therein David Sturyen egger, instead of David Stnrzeneggen that; the correct name is David Sturzenegger;" that the proper mrrections have been made in the tiles and records pertaining to the. casein the Patent Oflice, and are hereby made in said Letters Patent.

Signed, counte-migned, and sealed this 18th dag; of October, A. 1'). I381.

[ -l A. BELL,

Acting Secretary of the Inin-in-r.

Countersigned RM. MARBLE,

CMIITIIiRSiO'fl-Cf of Patents. 

